The DW-6.3/(0.2~0.5)-16 compressor is a high-performance, oil-free reciprocating gas compressor designed for continuous operation in demanding industrial environments. With advanced engineering, water-cooled design, and non-lubricated cylinders, it ensures clean compression without medium contamination, making it ideal for applications in natural gas, hydrogen, associated gas, and other special gases.
Key Technical Specifications
Nominal Capacity: 6.3 m³/min
Inlet Pressure: 20–50 KPa.G (design 30 KPa.G)
Discharge Pressure: 1.6 MPa.G
Compression Stages: Two-stage, double-acting
Cooling Method: Open-type water cooling
Lubrication: Oil-free, self-lubricating PTFE components
Main Features & Advantages
Balanced D-type design: Symmetrical structure ensures stable performance and reduced vibration.
Oil-free operation: PTFE piston rings and packing seals eliminate oil carryover, protecting gas purity.
Durable construction: Gray cast iron crankcase, stainless steel valves, and corrosion-resistant cylinder liners extend service life.
Efficient cooling system: Water-cooled design removes excess heat, ensuring reliability during continuous operation.
Leak-tight sealing: Advanced packing with nitrogen purge minimizes gas leakage and enhances safety.
Compact and modular: Skid-mounted design allows easy installation and maintenance.
Highlight Advantages
 |  |  |  |
| Has high efficiency, strong reliability, and high degree of automation; | Less vulnerable parts, low vibration, low noise, and easy operation and maintenance | The main and auxiliary equipment of the compressor are all installed on the sled, running smoothly and reliably. The overall sled installation is convenient for the transportation and installation of the compressor | The entire machine components are carefully designed |
Patent Certificates
 | A piston rod thread protective sleeve ZL 2017 2 1907021.7 | | A piston ring support device ZL 2018 2 0294776.2 | |
| A range piston ZL 2017 2 190177.0 for symmetrical balanced compressors | | Integrated long short double compartment ZL 2018 2 0294762.0 |
To guarantee safety, durability, and performance, each DW-6.3/(0.2~0.5)-16 Reciprocating Piston Gas Compressor undergoes strict testing and trial operation before delivery and commissioning.
Cylinder blocks, pistons, and pressure-bearing chambers are tested at 1.5 times the maximum allowable working pressure for at least 30 minutes, ensuring strength and reliability.
Water chambers are tested under the same conditions, with a minimum test pressure of 0.8 MPa, preventing leakage and ensuring long-term durability.
All pressure vessels are tested according to international standards, with complete inspection and test reports provided to customers.
The compressor frame also undergoes a kerosene leakage test to confirm tightness and sealing integrity.
After installation at the customer’s site, the compressor is tested under real operating conditions.
Using ammonia gas as the medium, the unit runs continuously for at least 4 hours at its rated speed, verifying stability and efficiency.
Before trial operation, installation records are reviewed to ensure compliance with design requirements.
The trial run is supervised by professional engineers, with participation from both the supplier and the buyer.
Upon completion, a Load Trial Report is jointly signed, serving as the basis for preliminary acceptance of the equipment.
Enhanced Safety – All critical components undergo pressure tests above working limits.
Reliable Performance – Full-load trial ensures long-term stability.
International Standards – Test reports and documentation are provided.
Customer Assurance – Joint acceptance guarantees transparency and trust.
 | |
The compressor in this picture is a non-standard product. The product provides independent solutions tailored to customers' specific usage requirements (flow rate/purity/pressure, usage environment, main purpose, and customer specific requirements), from design to product customization.
Structural form: D-type/M-type/S-type/W-type/V-type/Z-type
Cooling method: water cooling/air cooling/mixed cooling
Installation form: fixed/mobile/pry mounted/cabin type
Drive mode: motor drive/diesel engine start
Transportation: sea/air/land
Packaging:
 |  |  |
| Metal cabin | Wooden box | Soundproof cabin |
Project Case
 |  |  |
| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Alibek oilfield in Southern Kazakhstan | Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field |
Technical Parameter
| No. | Model | Medium | Flow rate (Nm3/h) | Inlet pressure (MPa.G) | Exhaust pressure (MPa.G) | Speed (r/min) | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) |
| 1 | SF-10/250 | Air | 600 | Atmospheric | 25.0 | 1330 | 258.5 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 2 | SF-10/150 | Air | 600 | Atmospheric | 15.0 | 1330 | 258.5 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 3 | SF-7.5/250 | Air | 450 | Atmospheric | 25.0 | 980 | 160 (Diesel) | Air-cooled | 6500*2200*2200 | 7000 |
| 4 | SF-7.5/150 | Air | 450 | Atmospheric | 15.0 | 980 | 132 (Diesel) | Air-cooled | 6500*2200*2200 | 7000 |
| 5 | SF-8.5/250 | Air | 510 | Atmospheric | 15.0 | 980 | 200 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 6 | W-10/60 | Air | 600 | Atmospheric | 6.0 | 1330 | 132 (Diesel) | Air-cooled | 6000*2200*2200 | 7000 |
Project Case
 |  |  |
| Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. |
The DW-6.3/(0.2~0.5)-16 compressor is a high-performance, oil-free reciprocating gas compressor designed for continuous operation in demanding industrial environments. With advanced engineering, water-cooled design, and non-lubricated cylinders, it ensures clean compression without medium contamination, making it ideal for applications in natural gas, hydrogen, associated gas, and other special gases.
Key Technical Specifications
Nominal Capacity: 6.3 m³/min
Inlet Pressure: 20–50 KPa.G (design 30 KPa.G)
Discharge Pressure: 1.6 MPa.G
Compression Stages: Two-stage, double-acting
Cooling Method: Open-type water cooling
Lubrication: Oil-free, self-lubricating PTFE components
Main Features & Advantages
Balanced D-type design: Symmetrical structure ensures stable performance and reduced vibration.
Oil-free operation: PTFE piston rings and packing seals eliminate oil carryover, protecting gas purity.
Durable construction: Gray cast iron crankcase, stainless steel valves, and corrosion-resistant cylinder liners extend service life.
Efficient cooling system: Water-cooled design removes excess heat, ensuring reliability during continuous operation.
Leak-tight sealing: Advanced packing with nitrogen purge minimizes gas leakage and enhances safety.
Compact and modular: Skid-mounted design allows easy installation and maintenance.
Highlight Advantages
| | | |
| Has high efficiency, strong reliability, and high degree of automation; | Less vulnerable parts, low vibration, low noise, and easy operation and maintenance | The main and auxiliary equipment of the compressor are all installed on the sled, running smoothly and reliably. The overall sled installation is convenient for the transportation and installation of the compressor | The entire machine components are carefully designed |
Patent Certificates
| A piston rod thread protective sleeve ZL 2017 2 1907021.7 | | A piston ring support device ZL 2018 2 0294776.2 | |
| A range piston ZL 2017 2 190177.0 for symmetrical balanced compressors | | Integrated long short double compartment ZL 2018 2 0294762.0 |
To guarantee safety, durability, and performance, each DW-6.3/(0.2~0.5)-16 Reciprocating Piston Gas Compressor undergoes strict testing and trial operation before delivery and commissioning.
Cylinder blocks, pistons, and pressure-bearing chambers are tested at 1.5 times the maximum allowable working pressure for at least 30 minutes, ensuring strength and reliability.
Water chambers are tested under the same conditions, with a minimum test pressure of 0.8 MPa, preventing leakage and ensuring long-term durability.
All pressure vessels are tested according to international standards, with complete inspection and test reports provided to customers.
The compressor frame also undergoes a kerosene leakage test to confirm tightness and sealing integrity.
After installation at the customer’s site, the compressor is tested under real operating conditions.
Using ammonia gas as the medium, the unit runs continuously for at least 4 hours at its rated speed, verifying stability and efficiency.
Before trial operation, installation records are reviewed to ensure compliance with design requirements.
The trial run is supervised by professional engineers, with participation from both the supplier and the buyer.
Upon completion, a Load Trial Report is jointly signed, serving as the basis for preliminary acceptance of the equipment.
Enhanced Safety – All critical components undergo pressure tests above working limits.
Reliable Performance – Full-load trial ensures long-term stability.
International Standards – Test reports and documentation are provided.
Customer Assurance – Joint acceptance guarantees transparency and trust.
| |
The compressor in this picture is a non-standard product. The product provides independent solutions tailored to customers' specific usage requirements (flow rate/purity/pressure, usage environment, main purpose, and customer specific requirements), from design to product customization.
Structural form: D-type/M-type/S-type/W-type/V-type/Z-type
Cooling method: water cooling/air cooling/mixed cooling
Installation form: fixed/mobile/pry mounted/cabin type
Drive mode: motor drive/diesel engine start
Transportation: sea/air/land
Packaging:
| | |
| Metal cabin | Wooden box | Soundproof cabin |
Project Case
| | |
| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Alibek oilfield in Southern Kazakhstan | Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field |
Technical Parameter
| No. | Model | Medium | Flow rate (Nm3/h) | Inlet pressure (MPa.G) | Exhaust pressure (MPa.G) | Speed (r/min) | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) |
| 1 | SF-10/250 | Air | 600 | Atmospheric | 25.0 | 1330 | 258.5 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 2 | SF-10/150 | Air | 600 | Atmospheric | 15.0 | 1330 | 258.5 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 3 | SF-7.5/250 | Air | 450 | Atmospheric | 25.0 | 980 | 160 (Diesel) | Air-cooled | 6500*2200*2200 | 7000 |
| 4 | SF-7.5/150 | Air | 450 | Atmospheric | 15.0 | 980 | 132 (Diesel) | Air-cooled | 6500*2200*2200 | 7000 |
| 5 | SF-8.5/250 | Air | 510 | Atmospheric | 15.0 | 980 | 200 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 6 | W-10/60 | Air | 600 | Atmospheric | 6.0 | 1330 | 132 (Diesel) | Air-cooled | 6000*2200*2200 | 7000 |
Project Case
| | |
| Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. |
